Prosecutor Sabhia Pathan said Atomei, who is from Romania and has lived in the UK for more than 10 years, visited the Althorp Estate several times since July 2025.
She sent Earl Spencer, who is the brother of Princess Diana, letters “expressing her love” via recorded delivery and made dozens of posts about him on social media.
Judge Potter said the letters showed an “infatuation” with Earl Spencer, adding: “I daresay they were profoundly unnerving.”
Sophie Murray, defending, said Atomei had a “completely clear” criminal record and had shown insight into her behaviour.
The judge told Atomei if she broke her bail conditions “you will be brought back into custody until this case is dealt with”.
“You now understand how Earl Spencer feels about the contact from you and how unnerving it is for him.
“I am quite satisfied that you now have an understanding about how you should behave,” he added.